Honda CB160 Shop Manual page 32

28 3. "ENGINE
I.
Lubrication circuit
Fig. 3. 68 Oil pump
Oil stored in the crankcase chamber is drawn up
by the oil pump and fed from the lower · crankcase
to the upper case through the oil passage of the oil
filter cover to the oil filter.
Impurities in the oil are
separated by centrifugal force at the oil filter. Clean
oil is fed from the upper crankccise to all crankshaft
bearings for lubrication. . When oil enters the right
and left crankshaft outer rings, it is divided into two
parts ; one is fed to the roller bearing and the other
enters the crankshaft for force lubricating the crank
end of connecting rod ; the piston ends of connecting
rods ar_e lubricated by splashing.
Oil from the oil passage in the upper crankcase is
divided into twb in the right and left at the rear of
the cylinder stud bolt and is fed to the cylindar and
cylinder head. At the right side, from the right
cylinder head cover {at the left side from the point
base), oil is fed to the camshaft and lubricates the
camshaft rocker arm ; it then falls from the clearance
around the cam chain at the center into the crankcase.
Oil from one side which was divided into two at
the left side of the upper case follows the oil pas-
sage in the crankcase, enters the main transmission.